Container opening device with bend-supporting portion

Abstract

A device for opening an opening portion of an upper panel of a container is formed of a lifting portion, a pressing portion integrally formed with the lifting portion, and an elongated portion extending from one of the lifting portion and the pressing portion. A fixing member fixes a part of the elongated portion to the upper panel of the container. In the invention, a bend-supporting portion is provided in the elongated portion between the fixing member and an edge near the one of the lifting portion and the pressing portion. When the lifting portion is pulled upwardly, the bend-supporting portion initially receives a force and bends thereat to provide a space for a finger between the upper panel and the lifting portion without substantially applying the force to the pressing portion. The opening portion for the container can be easily opening.

What is claimed is: 
     
       1. A device for opening an opening portion of an upper panel of a container, the device comprising: a pull tab being in contact with said upper panel in a storage position, said pull tab including a lifting portion, said lifting portion being located on a first side of the pull tab;   a pressing portion integrally formed with the lifting portion on a second side of said pull tab;   an elongated portion extending from said pressing portion toward said lifting portion;   a fixing member for fixing a part of the elongated portion to the upper panel of the container; and   a bend-supporting portion provided in the elongated portion between the fixing member and an edge near said pressing portion, said bend-supporting portion initially receiving a lifting force and bending upwardly thereat when the lifting portion is initially pulled to provide a space for a finger between the upper panel and the lifting portion, said bend-supporting portion thereafter serving as a fulcrum and enlarging said lifting force so as to transmit the lifting force to the pressing portion which presses against said upper panel to rupture said opening portion or said upper panel;   wherein a projection is provided on said pressing portion so as to project downwardly at a position near a fold line of the elongated portion, the projection being brought to contact with a rear surface of said bend-supporting portion when said bend-supporting portion is bent at an early stage of lifting operating of said pull tab.   
     
     
       2. A device according to claim 1, wherein said pressing portion includes a depression near the bend-supporting portion to reinforce the pressing portion. 
     
     
       3. A device according to claim 1, wherein said pressing portion includes a projection at a side facing the opening portion to concentrate opening force thereat.